diff --git a/t/data/sources.list.bookworm b/t/data/sources.list.bookworm
deleted file mode 100644
index 12252e7..0000000
--- a/t/data/sources.list.bookworm
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-#  /etc/apt/sources.list
-#
-
-
-#
-# bookworm
-#
-deb     http://deb.debian.org/debian     bookworm main contrib non-free
-deb-src http://deb.debian.org/debian     bookworm main contrib non-free
-
-#
-# Security updates
-#
-deb     http://security.debian.org/ bookworm-security  main contrib non-free
-deb-src http://security.debian.org/ bookworm-security  main contrib non-free
diff --git a/t/data/sources.list.bullseye b/t/data/sources.list.bullseye
deleted file mode 100644
index e2a214e..0000000
--- a/t/data/sources.list.bullseye
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-#  /etc/apt/sources.list
-#
-
-
-#
-# bullseye
-#
-deb     http://deb.debian.org/debian     bullseye main contrib non-free
-deb-src http://deb.debian.org/debian     bullseye main contrib non-free
-
-#
-# Security updates
-#
-deb     http://security.debian.org/ bullseye-security  main contrib non-free
-deb-src http://security.debian.org/ bullseye-security  main contrib non-free
diff --git a/t/data/sources.list.buster b/t/data/sources.list.buster
deleted file mode 100644
index 370da88..0000000
--- a/t/data/sources.list.buster
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-#  /etc/apt/sources.list
-#
-
-
-#
-# buster
-#
-deb     http://deb.debian.org/debian     buster main contrib non-free
-deb-src http://deb.debian.org/debian     buster main contrib non-free
-
-#
-# Security updates
-#
-deb     http://security.debian.org/ buster/updates  main contrib non-free
-deb-src http://security.debian.org/ buster/updates  main contrib non-free
diff --git a/t/data/sources.list.sid b/t/data/sources.list.sid
deleted file mode 100644
index 8521dd3..0000000
--- a/t/data/sources.list.sid
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-#  /etc/apt/sources.list
-#
-
-
-#
-# sid
-#
-deb     http://deb.debian.org/debian     sid main contrib non-free
-deb-src http://deb.debian.org/debian     sid main contrib non-free
-
-#
-# Security updates - Uncomment to enable.
-#
-# deb     http://security.debian.org/ sid-security  main contrib non-free
-# deb-src http://security.debian.org/ sid-security  main contrib non-free
diff --git a/t/data/sources.list.stretch b/t/data/sources.list.stretch
deleted file mode 100644
index ea1db4a..0000000
--- a/t/data/sources.list.stretch
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-#  /etc/apt/sources.list
-#
-
-
-#
-# stretch
-#
-deb     http://deb.debian.org/debian     stretch main contrib non-free
-deb-src http://deb.debian.org/debian     stretch main contrib non-free
-
-#
-# Security updates
-#
-deb     http://security.debian.org/ stretch/updates  main contrib non-free
-deb-src http://security.debian.org/ stretch/updates  main contrib non-free
diff --git a/t/hook-apt.t b/t/hook-apt.t
index 3479cb8..e13075b 100755
--- a/t/hook-apt.t
+++ b/t/hook-apt.t
@@ -13,7 +13,6 @@ use File::Temp;
 use File::Copy;
 use File::Path qw(make_path);
 
-my $asl = 't/data/sources.list';
 my $hook_dir = $ENV{AS_INSTALLED_TESTING} ? '/usr/share/xen-tools' : 'hooks';
 
 foreach my $dist (qw(stretch buster bullseye bookworm sid)) {
@@ -25,7 +24,6 @@ done_testing();
 sub testHook
 {
     my ( $dist ) = ( @_ );
-    my $dasl = "$asl.$dist";
     my $ea   = 'etc/apt';
     my $easl = "$ea/sources.list";
     my $hook = "$hook_dir/" .
@@ -36,57 +34,56 @@ sub testHook
         ) . '/20-setup-apt';
 
     #
-    #  Check that the according sample sources.list exists.
+    #  Create a temporary directory to use as prefix
     #
-    if (-e $dasl) {
+    my $dir = File::Temp::tempdir( CLEANUP => 1 );
+    make_path( "$dir/$ea/apt.conf.d", { chmod => 0755 });
+    make_path( "$dir/bin", { chmod => 0755 });
+    my $tmphook = "$dir/bin/20-setup-apt";
 
-        #
-        #  Create a temporary directory to use as prefix
-        #
-        my $dir = File::Temp::tempdir( CLEANUP => 1 );
-        make_path( "$dir/$ea/apt.conf.d", { chmod => 0755 });
-        make_path( "$dir/bin", { chmod => 0755 });
-        my $tmphook = "$dir/bin/20-setup-apt";
+    #
+    # Make sure that worked.
+    #
+    ok( -d $dir, "temporary directory created OK [$dist]" );
+    ok( -d "$dir/bin",
+        "bin inside temporary directory created OK [$dist]" );
+    ok( -d "$dir/$ea",
+        "$ea inside temporary directory created OK [$dist]" );
 
-        #
-        # Make sure that worked.
-        #
-        ok( -d $dir, "temporary directory created OK [$dist]" );
-        ok( -d "$dir/bin",
-            "bin inside temporary directory created OK [$dist]" );
-        ok( -d "$dir/$ea",
-            "$ea inside temporary directory created OK [$dist]" );
+    # Create a copy of the 20-setup-apt hook to be able to comment out
+    # the chroot + apt-get update call.
+    File::Copy::cp( $hook, $tmphook );
 
-        # Create a copy of the 20-setup-apt hook to be able to comment
-        # out the chroot + apt-get update call.
-        File::Copy::cp( $hook, $tmphook );
+    ok( -e "$tmphook", "hook exists in temporary directory [$dist]" );
+    ok( -x "$tmphook", "hook is executable in temporary directory [$dist]" );
 
-        ok( -e "$tmphook", "hook exists in temporary directory [$dist]" );
-        ok( -x "$tmphook",
-            "hook is executable in temporary directory [$dist]" );
+    no warnings qw(qw);
+    is(system(qw(sed -e s/chroot/#chroot/ -i), $tmphook) >> 8, 0,
+       "chroot call in hook could be deactivated [$dist]");
+    use warnings qw(qw);
 
-        no warnings qw(qw);
-        is(system(qw(sed -e s/chroot/#chroot/ -i), $tmphook) >> 8, 0,
-           "chroot call in hook could be deactivated [$dist]");
-        use warnings qw(qw);
+    #
+    # Set up some variables expected by the hook
+    #
+    $ENV{dist} = $dist;
+    $ENV{mirror} = 'http://deb.debian.org/debian';
 
-        #
-        # Set up some variables expected by the hook
-        #
-        $ENV{dist} = $dist;
-        $ENV{mirror} = 'http://deb.debian.org/debian';
+    #
+    #  Call the hook
+    #
+    is(system($tmphook, $dir) >> 8, 0,
+       "hook for $dist exited with zero return code");
 
-        #
-        #  Call the hook
-        #
-        is(system($tmphook, $dir) >> 8, 0,
-           "hook for $dist exited with zero return code");
-
-        ok( -e "$dir/$easl", "A sources.list file has been created. [$dist]" );
-        files_eq_or_diff($dasl, "$dir/$easl",
-                         "sources.list for $dist has the expected contents")
-    }
-    else {
-        BAIL_OUT("$dasl not found, source distribution seems incomplete");
+    ok( -e "$dir/$easl", "A sources.list file has been created. [$dist]" );
+    if ($dist =~ /stretch|buster/) {
+        file_contents_like( "$dir/$easl", qr(\b${dist}/updates\b),
+                            "sources.list contains $dist/updates");
+        file_contents_unlike( "$dir/$easl", qr(\b${dist}-security\b),
+                              "sources.list doesn't contain $dist-security");
+    } else {
+        file_contents_like( "$dir/$easl", qr(\b${dist}-security\b),
+                            "sources.list contains $dist-security");
+        file_contents_unlike( "$dir/$easl", qr(\b${dist}/updates\b),
+                              "sources.list doesn't contain $dist/updates");
     }
 }